Crusher head and mantle



June 13, 1933. A L, MUNRO Er AL 1,914,151

CRUSHER HEAD AND MANTLE Filed 001. 51, 1929 Patented June 13, 1933 PATENT OFFICE ALEXANDER I4- 1VIUNROANIQHARITEY I-I. RUMPEL, OF MILWAUKEE, WISCONSIN, AS-

SIGNORS T0 SMITH ENGINEERING. wo

PORATION 01?..WISCONSIN Y 1 RKS, OF' MILWAUKEE, WISCONSIN, A COR- cRUsHEn :HEAD AND: MAN'ILE Application filed October 31, 1929. Serial 110. 403,795.

This invention relates to improvements in crusher head and mantle for crushing mills. It is one of the objects of the present invention to provide afcrusher' head and'mantle in which the mantle isconnected to the head in a novel manner to permit the mantle to creep, and be forced lower on the head as it stretches under wear.

A further object of the invention is to provide a crusher head and mantle in which the mantle is formed in twoparts to form'a wedging engagement to more firmly lock the mantle to the crusher head.

' A further object of the invention is to pro vide a crusher head and m'antle in which the mantle is firmly anchored to the crusher head in a manner to permit a slight downward wedging movement. of the mantle when.

stretched by use.

A further ob'ect of the invention is to pro vide a crusher head and mantle having means for anchoring the mantle to the interposed binding metal and the binding metal to the crusher head.

I A further object of the invention is to provide a crusher head and mantle which is of simple construction, is stronganddurable and is well adapted for the purpose described.

With the above and other'objects in 'view the invention consists of the improvedcrusher head and mantle and its parts and combinations as set forth in the'claims and all equivalents thereof. I

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a vertical sectional view of the improved crusher head and mantle;

Fig. 2 is a vertical sectional view of the lower section of the mantle; i

Fig. 3 is'a vertical sectional View of the upper section of'the mantle taken on line 3-3 of Fig. 4; i I

Fig. 4 is an inverted view of the upper section of the mantle; and

Fig. 5 is a fragmentary top view of the crusher head showing therecesses for holding theupper mantle section in position.

Referring to the drawing the numeral 8 indicates a crusher head which is provided with a lower frusto-conical portion 9 and an upper cylindricalportion having outer holding ribs 10 forming a tapered shoulder 11 therebe tween. The ribslO extend eircum'ferentially around the head in parallel relation and the taperedshoulderis formed with radially extending recesses or pockets 12.

A lower mantle section 13 of conical form and provided'with an inner lower annular flange 14- is mounted on the frusto-conical portion 9 of the head with the flange 14: directly engagingthehead. An upper mantle section or collar 15 of angular formation in cross section, is shaped to the general contour of the portion of the head it is to fit and is placed'around the head above the lower section as shown in Fig. 1. The outer portion of the upper section is shaped to conform to the conical portion of the lower section and forms a continuation thereof. An inner upper portion of the upper section or collar is formed with circumferential parallel ribs 16 and the lower angularpo'rtion 16 of said section is formed with downwardly and inwardly extendingradial lugs 17 which project into the recesses or pockets 12' to lock the upper mantle section against independent turning movement on the head.

To secure the lower mantle section firmly to the head, the inner peripheral portion is provided with circumferential lines of round pockets 18 of dovetail formation to better engage the binding zinc.

The circumferential rib 14 before mentioned holds the main portions of the mantle sections spaced from the crusher head and the space between the lower mantle section and the crusher head is then filled with zinc 19 while in a molten state. The upper mantle section is then'placed on the head and the space between said upper mantle and the head is likewise filled with zinc in a molten condition'to form a holding means separate from the filler'of the lower mantle section. The molten zinc enters the pockets 12 and 18 and when hard holds the parts in position.

' The lower mantle section is preferably formed of manganese steel-while the upper mantle section or collar is formed of chrome nickel steel to better resist wear.

The lower edge portion of the collar 15 and the upper edge portion of the lower mantle section 13 are of cam formation as indicated by the numerals 20 and 21 so that when the mantle section 13 stretches by use it will work around the head and the cam engagement will force the lower mantle section into wedging engagement with conical portion of the head and thus automatically compensate for stretch. Furthermore, the cam engagement between the two mantle sections will lock the lower mantle section against independent movement on the head except when moving into Wedging engagement with the head. As the cam portions are duplicated on opposite sides of the head the head may be rotated in either direction. The softer interposed zinc will give and stretch 'and permit movement of the lower mantle section.

The circumferential rib formation of the collar and the head portion firmly'locks-the collar against endwise movement on the head.

To remove the mantle when worn it is necessary to melt the softer binding zinc or to burn portions of the harder mantle member.

In some cases the interposition of zinc between the lower mantle section 13 and the crusher head may be omitted and the section may rest directly upon the head.

From the foregoing description it will be seen that the crusher head and mantle are combined and held together in a very simple manner, and. thatmeans are provided for compensating for the wear and stretch of the mantle and automatically maintain the parts in intimate relation.

What we claim as our inventionis:

1. A crusher head and mantle, comprising a crusher head having a conical portion, a ribbed portionand a tapered shoulder there between having pockets, a lower mantle section extending around the conical portion, an upper mantle section extending around the ribbed portion and having a complementary ribbed portion and. also havinglugs which extend into the pockets, said sections having means for preventing independent movementof the lower mantle section on the conical portion, and a binding metal interposed between the sections and the crusher head while in a molten condition to maintain the parts in position.

2. A crusher head and mantle, comprising a crusher head having a conical portion, a

2 ribbed portion and a tapered shoulder therebetween having pockets, a lower mantle sec tion extending around the conical portion'and having a plurality of pockets on its periphery, an upper mantle section extending around the ribbed portion and having a complementary ribbed portion and also having lugs which extend into the pockets, said sections having means for preventing independent movement of the lower mantle section on 1 the conical portion, and a binding metal interposed between the sections and the crusher head and in the pockets while in a molten condition to maintain the parts in position.

3. A crusher head and mantle, comprising a crusher head having a conical portion, an upper portion having circumferential ribs and a tapered shoulder therebetween having pockets, a lower mantle section extending around the conical portion and having a plurality of dovetail pockets and an upper cam shaped edge, the lower portion of saidmantle section having an inwardly extending flange which spaces the major portion of the mantle from the conical portion, an upper mantle section extending around the ribbed portion and having an inner complementary ribbed portion, said upper section also having inner lugs which project into the pockets of the tapered shoulder to lock the upper section against movement on the head, the lower edge of the upper section being of cam shape complementary to the cam edge of the lower mantle section, and a hindingmetal interposed between the sectionsand the crusher head and in the pockets while in a molten condition to maintain the parts in position.

4. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening tapered shoulder, a mantle section surrounding said conical portion, another mantle section surrounding said ribbed portion and having complementary ribs, said sections having cam engagement at their adjoining ends, and a binding metal interposed between the complementary ribs of said head portion and said mantle section.

5. A crusher head and mantle,.comprising a crusher head having conical and ribbed portions and an intervening pocketed portion, a mantle section surrounding saidconical portion, another mantle section surrounding said ribbed portion and having lugs ex tending into the pockets of said intervening portion, said sections having. cam engagement at their adjoining ends, and a binding metal interposed within said. pockets and about said lugs. s

6. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening pocketed tapered shoulder, a mantle section surrounding said conical portion, another mantle section surrounding said ribbed portion and having complementary ribs and also surrounding said shoulder and having lugs extending into the pockets thereof, said sections having cam engagement at their adjoining ends, and a binding metal interposed between the complementary ribs and within said pockets around said lugs.

7. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening tapered shoulder, a mantle section surrounding said conical portion, another mantle section coacting with said first mentioned section and surrounding said ribbed portion and having complementary ribs, and a binding metal in-v. terposed between the complementary ribs of said head portion and said ribbed mantle section.

8. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening pocketed portion, a mantle section surrounding said conical portion, another mantle section coacting with said first mentioned section and surrounding said ribbed portion and having lugs extending into the pockets of said intervening portion, and a binding metal interposed w1thin said pockets and about said lugs.

9. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening pocketed tapered shoulder, a mantle section surrounding said conical portion, another mantle section coacting with said first mentioned section and surrounding said ribbed portion and having complementary ribs and also surrounding said shoulder and having lugs extending into the pockets thereof, and a binding metal interposed between the complementary ribs and within said pockets around said lugs.

10. A crusher head and mantle, comprising a crusher head having conical and ribbed portions and an intervening shoulder, a mantle section surrounding said conical portion, another mantle section coacting with said first mentioned section and surrounding said ribbed portion and said shoulder, and a binding metal interposed between one of said sections and said head.

In testimony whereof, we afiix our signatures.

ALEXANDER L. MUN R0. HARVEY H. RUMPEL. 

